1. Longitudinal-particles move parallel to wave motion
Transverse- particles move 90° to wave motion
Frequency is the number of waves passing a point in one second
Period-Time taken for 1 wave to pass a point
Transfers energy
F=1/T
refraction
Waves
v = f x ƛ
diffraction
Wavefronts
reflection
High speed, large wavelength
Low speed, small wavelength

2. Refractive index, n = sin i/sin r
Light
Reflection
Refraction
Dispersion
ROYGBIV
Fiber optics
Virtual
Laterally inverted
Same size as the object
Same distance behind the mirror as the object is in front
Refractive index, n = sin i/sin r Or
c =3 x 108 m/s
i <cr
i = cr
i > cr

3. Electromagnetic Spectrum
Monochromatic light
Vacuum-3 x 108 m/s
Gate X Usually Lets In More Radiation- order of wavelength
Waves
Waves
Waves
Waves
Waves
Waves